Imitating a vinyl top

Did your car come with a vinyl top originally? I'm not a fan of vinyl tops myself, but I like your idea of a "sprayed on" version. Vinyl tops tend to cause rust issues if not parked in a garage all the time. I've seen sprayed on done with pretty nice looking results, but I don't know what they used or how it was done.

You could simply paint the top with a contrasting color (black or white, whatever). I think that was also an original option from Dodge back in the day.